Questions tagged [hacking]
Questions about retrofitting or modifying an electrical component or device to achieve new functionality/feature or eliminate an undesired one.
104
questions
0
votes
0
answers
31
views
Can the lens from an MLX90614-DCI sensor be transferred to other MLX90614 models to limit the FOV?
After discovering my misconception about the temperature range of the MLX90614-DCI version—which is actually -70°C to 270°C rather than the -70°C to 380°C I initially believed—I decided to switch to ...
- 407
1
vote
1
answer
62
views
Help identifying I2C sensor from Propel Star Wars Drone
I have a sensor from a Propel Star Wars drone that I can't identify. The metal part of the sensor is marked with "A6103 040". I have tried various libraries and sensors, including BME280, ...
- 13
1
vote
0
answers
88
views
FTDI chip not working properly [closed]
I recently purchased an FTDI chip from AliExpress. However, every time I try to use it on Linux via the picocom command, it gives me a lot of unknown characters. I ...
- 21
1
vote
0
answers
71
views
Use WS2811 as shift register [closed]
Has anyone used a WS2811 LED driver as a 3 bit shift register?
It's an IC for connecting ordinary LEDs to make them addressable with same protocol as the popular WS2812b LEDs. I just realized I can ...
- 23
0
votes
1
answer
75
views
How to turn on a laptop without the case [closed]
We are trying to use a laptop motherboard in an automotive project for running an AI and, in the end of reducing size, we want the laptop without the case. The laptop is an HP Omen 15 from last year (...
- 317
0
votes
2
answers
103
views
Using Atomminer AM01's fpga for purposes other than mining [closed]
I was thinking about Using Atomminer AM01's fpga for purposes other than mining, maybe using vhdl or verilog, I wanted to ascend if it is possible?
- 1
0
votes
1
answer
147
views
Add buzzer to multimeter
How can I add a buzzer to my EverStart Digital Multimeter 10711WDI circuit board, so that it buzzes when there is continuity?
- 1
1
vote
1
answer
64
views
What would the markings above these pads mean? Trying to hack this watch
Here is an image of the watch:
(Original)
Here is an image of the pads in question:
(Original)
I am not very knowledgeable about hardware as I come from a software background. Could anyone lead me ...
- 135
0
votes
2
answers
156
views
FPGA patching existing program
This may be a beginner's question as I'm not that well versed in FPGA design.
What I basically have is a preprogrammed Lattice LFE5U-25F with an external memory and I don't have the source code of ...
0
votes
1
answer
59
views
Tapping a surface mount switch
I'm trying to extend a surface mount switch on a PCB. The bottom two connection points trace to ground and the top two connection points trace to ground if and only if the switch is depressed. That ...
1
vote
0
answers
152
views
How can I slow down the motors of my magnetic stirrer?
I have a 5-motor magnetic stirrer, used for non-contact stirring of labware. My problem is that this stirrer was designed for bacterial cell culture, and not mammalian (more fragile, needs slower ...
- 11
0
votes
0
answers
196
views
Reverse engineering this very common component tester
I'm talking about this common variety of component testers here.
Here's my goal: To extend it so it can properly identify MOSFETs & IGBTs even if the threshold voltage is higher than 5V.
I was ...
- 409
1
vote
1
answer
158
views
Best desoldering technique for reverse engineering, or maybe UART
So I'm trying to play with an EPS motor. I was able to get it to this stage while still functioning (can bus still alive and motor spins), but I want to see what processor is uses and see if I can ...
- 113
0
votes
1
answer
739
views
Hacking a trail camera [closed]
A quick warning, I have no prior knowledge in electronics. I don't even know if what I'm asking is doable.
Here is the idea. I was given an old refurbished Reconnyx Hyperfire 2 camera trap. The flash ...
- 13
0
votes
1
answer
324
views
Extend range of BLE devices
I would like to extend the range of two BLE devices. The first one is a VR BLE controller with a monopole pcb antenna. The second one is an ESP32 Tinypico with a chip antenna.
I bought two pcb ...
- 67
0
votes
2
answers
143
views
ADS1115 not detect by Raspberry Pi Zero W on custom PCB
I designed my own PCB with an ADS1115 chip on it. I didnt connected the ADDR pin to GND and the ALERT pin to VDD, because I thought, that it wasnt going to be needed. When I wasnt able to detect it ...
- 83
0
votes
0
answers
456
views
Questions about deflection coil interlock on CRT TVs to restore beam brightness control
Electronics noob here, with experience in science and research. I am trying to make a music visulaiser out of an old monochrome CRT TV by connecting the horizontal and vertical deflection coils to an ...
2
votes
2
answers
176
views
Effect of (possibly missing) grounds in power amp output circuit
NOTE: It turns out, the ground connections I wonder about below actually are connected (thanks Sim Son in comments), although I still cannot see how they could be connected (additional closeups). The ...
- 663
0
votes
1
answer
74
views
Repurposed amplifier sanity check + ground connections
I want to use the audio amplifer from a scrapped TV control board (Sony 1-876-561-13).
The amp section is built around a TI TPA3100D2 chip. The original input was a PWM audio signal from some other ...
- 663
0
votes
2
answers
274
views
How to fix voltage divider that drops more voltage than expected? [closed]
I'm not sure if I stated the question correctly, but here are some details.
I want to hack Ikea smoke sensor that has a controller designated as CS2105GO-S12 (also known as MC145010). It has aa T4 ...
- 109
0
votes
1
answer
93
views
How to reproduce these audible clicking or popping sounds? [closed]
My fluorescent lamps (and other devices) are making clicking sounds.
I want to reproduce these clicking or popping sounds or get an idea of how one might produce such sounds in electrical devices or ...
- 1
0
votes
1
answer
2k
views
Recharging CR2032 (LiMnO2) battery in a pinch
My digital calipers take a 3V 2032 (coin cell) battery, they currently contain a CR2032 (lithium manganese dioxide). It's on the very low end of remaining charge, I have no spares, and no easy way to ...
- 663
0
votes
0
answers
540
views
Replacing AA battery source with LiPo
I have a brother label printer that usually runs on 9V DC source or 8x1.5V standard AA batteries. The DC input jack on brother died so I decided to replace it and try to upgrade it to Li-po battery ...
- 1
1
vote
0
answers
58
views
Level-shifting with limited ways to change the board
I have this circuit:
simulate this circuit – Schematic created using CircuitLab
Where:
U1 is an MCU powered at 3.3V
OUT is a GPIO
the dashed box represents an external hardware that I cannot ...
- 1,253
0
votes
2
answers
235
views
How does this YouTube video's author identify pins with multimeter?
I was watching this video on JTAG. It is mostly too difficult for me to follow, and I will likely learn more about UART first before returning to this.
At around 13:00 he uses a multi-meter to ...
- 253
0
votes
0
answers
46
views
Trying to build custom electronics connection to a motorized zoom/focus lens
I'm a beginner when it comes to electronics, I had some success with pretty simple arduino based projects like blue tooth controlled stepper motor assemblies using well documented drivers and ...
- 1
0
votes
0
answers
91
views
How to modifiy DC2259A evaluation board to access Vref2 on LTC6811-1 IC? For the purpose of powering external thermistors
I am using a DC2259A Evaluation Board, to monitor battery cell voltages and am hoping to drive external thermistor circuits for the purpose of measuring battery cell temperatures from Vref2 on the ...
- 1
2
votes
3
answers
2k
views
Using LED bike lights with a dynamo instead of batteries
Today, I stayed too long chatting at a friend's house which caused me to ride home in the dark.
Unfortunately the batteries on the lights were quite drained so the lights barely worked.
Then I noticed ...
0
votes
0
answers
97
views
Will permanent inverted current damage my relay module or even my electronic system?
So I have an expensive piece of electronic equipment which emits ionizing radiation and I need it to set off a warning lightbulb on the wall.
The support company is asking me an overpriced solution so ...
- 143
4
votes
1
answer
9k
views
Hacking Dell charger to run directly from an external 19.5V power source [closed]
I needed to power my Dell laptop without having 220V (because my inverter is burnt in the middle of nowhere) in my van.
By using a boost converter that can deliver the required power, I simply set the ...
- 1,446
0
votes
2
answers
1k
views
How to modify IR auto-close circuit for trash can lid
Just bought a new trash can with an automatic lid that I'm fairly happy with, but there's one modification I'd like to make.
If I place the trash can in a cabinet and close the door it detects the ...
- 547
1
vote
1
answer
879
views
Hacking a Corsair Commander Pro [closed]
I unfortunately shot two Transistors of my Commander Pro because I drew to much current when I connected a pump to the fan-connector.
Now I want to desolder these two transistors, but I can't figure ...
- 165
2
votes
1
answer
96
views
BLE IoT device as platform backdoor for hackers
I have a IoT device that works with BLE and uses a smartphone as a bridge to connect to a digital platform (cloud).
The communication between the IoT device and the platform is based in PKI.
The IoT ...
- 143
0
votes
1
answer
364
views
Triggering button press from raspberry pi
I want to be able to solder to a gamecube controller circuit board and, from the raspberry pi, trigger the button press to register. From what I understand, the buttons work by being grounded when the ...
- 1
3
votes
3
answers
3k
views
How to hack to limit output power of a regular SMPS?
I need to charge my 60 Ah LiFePO4 battery with a small charger as fast as possible at 14.4V. There are lots of relatively cheap SMPS in the market which are not designed for this purpose (they are ...
- 1,446
0
votes
0
answers
308
views
How to connect to the PCB of an Alcatel Linkhub HH40
I recently bought an Alcatel Linkhub HH40 4G router. Unfortunately, the web interface doesn't provide the functionality I was hoping for (e.g., automatically disabling the radio functionality over ...
- 101
3
votes
2
answers
2k
views
What is the easiest (least complicated) way to emulate a "short" button press that pulls a pin low?
I'm trying out the IP5306 (The datasheet is in Chinese, I used the "document" feature of Google Translate to translate it).
Here is my schematic:
The IP5306 is a cheap boost chip that is normally ...
- 491
1
vote
1
answer
507
views
Arduino serial communication hacking
I recently bought a Chines massaging chair hoping i can intercept the serial communication between its wired remote and the chair itself, I've cut the wire and connect the Rxd and Txd of the chair to ...
- 11
1
vote
2
answers
344
views
Simulate Arduino keypad with Arduino
I came up with idea to create a simple keypad lock using this Keypad Matrix 3x4.
Now I want to brute-force the password using another Arduino. So I connect some GPIOs from my attacking Arduino to the ...
- 11
-1
votes
3
answers
378
views
Building a device to reduce pulse frequency by a variable amount
A speed sensor on the wheel of a mini motorcycle sends pulses as the wheel rotates. It may send 1, 2 or 4 pulses per tire revolution, so let's say that at top speed, it may have 10, 20 or as many as ...
- 131
1
vote
2
answers
806
views
Bidirectional (opto?) isolators for any protocol?
I would like to isolate digital serial communication between 2 circuits. I don't know much about the protocol between two circuits. It is not a common protocol such as SPI or I2C. Shortest pulses are ...
- 263
2
votes
1
answer
1k
views
Bypassing DSLR battery to power camera from power supply cheaply with bidirectional optocouplers
I am trying to power my Nikon DSLR with a permanent power source instead of the battery for long captures (overnight) without buying the overpriced battery adapter. I can't simply connect a AC-DC ...
- 263
0
votes
2
answers
2k
views
Change a quartz clock timebase by changing the frequency of the quartz crystal oscillator?
I've been doing some research on rewiring clock circuits for a project, but I'm new to these types of pulse-counting circuits. My question at this point is: If I replace the existing quartz crystal ...
- 1
3
votes
1
answer
14k
views
How can I reuse a crowdled bracelet?
I have been to an event last night, where I some wristbands produced by the Crowdled company (see links at the end).
Material of one band: 3 colored leds (2 in total) and a button. Runs on battery. ...
0
votes
3
answers
409
views
Which microcontroller and transistors can I use to control these switches?
I have a SATA HDD case (product details) with switches that toggle the power supply for each HDD.
My aim is to control each switch individually via software.
(My background: I'm a total novice to ...
- 101
4
votes
1
answer
283
views
How a modchip overrides specific signals?
I read an article on the original PSX copy-protection scheme lately, and how the modchips of that era were implemented using PIC MCUs. Then this question popped up, and I haven't been able to find a ...
- 355
7
votes
2
answers
4k
views
STM32L MCU - SWD pin on board not matching processor pinout
I was doing my hardware hack project on an air quality monitoring device which uses STM32L476 processor.
My only experiences with hardware hacking are IPcams or ...
- 569
0
votes
2
answers
85
views
Guess the conector DVL Edition?
Here is a challenge, we have a connector on a certain DVL (Doppler Velocity Logger) and we can't get data from it.
So we got a pinout, but without knowing pin 1 on the connector or what type of ...
user186758
1
vote
0
answers
87
views
What kind of connection is this?
I am trying to control my ventilator with a relay. I have found schematics of how to install it. Basically, I would like to immitate a wall switch with a relay to start the ventilator. The board of ...
- 263
1
vote
2
answers
2k
views
Creative T3100 speakers input mod
I have made an input mod to increase the input impedance of my Creative T3100 speakers.
But now even if the potentiometer is at the lowest level some sound from the input is coming off from the ...
user170729