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  1. camerart

    YI car camera hacking

    Hi, I have a couple of YI car cameras, which send vision to a mobile phone, and saves videos on an SD card. The range is poor, so I'm exploring different ways of imroving this. Either boost the wifi, or find the composite section on the schematic, and transmit it via radio. Any ideas welcome. C
  2. camerart

    Bias_T and inductor resistance

    Hi, I have some circuits with possibly Capacitors, or inductors. If I put an Ohm meter across a capacitor it should show nothing, but what should happen with the inductor? Camerart
  3. camerart

    AK8963C iPhone 6 compass PCB

    Hi, I am working on a project that uses an iPhone 6 compass module AK8963C. I ma up some PCBs, which sometimes work and sometimes not. Since then I've found correct CAPS etc that IPhone use. On the VID track are 2x CAPS on the VDD track there are 2x CAPS.. The iPhone controls VID and VDD...
  4. camerart

    Dyslexic Data sheets reading

    Hi, I'm a bit dyslexic, and sometimes have difficulty reading Data sheets. I'm trying to understand how to set-up a BMP280 Barometer sensor, using it's D/S and at each setting e,g, SPI READ WRITE, I can read each section manytimes and not move forward. Is there anyone who can help me please...
  5. camerart

    Hot air gun plug standard

    Hi, Is there a standard pinout for hot airgun plugs? Camerart
  6. camerart

    FST3253 Switch clarification

    Hi, I'm using a FST3253 Switch for switching 3x different RX DATA signals, into a RX PIC. I would like some clarification please. If OE1 and OE2 is connected to GND, is it ok to switch using only S0 and S1? All of the PCB, DATA and PICs are 3.3V, the FST3253 requires 5V. Is it ok to use this...
  7. camerart

    AK8963 Compass peripheral on 18F4620 intermittent error?

    Hi, Here's a puzzle! I made some Compass breakout boards for an AK8963C chip. x5 (Iphone5) I have PCBs x3, some with 3x different peripherals, using SPI. 1x PCB with only the Compass, and a simple program on the 18F4620. I've been testing each peripheral on separate programs, till almost...
  8. camerart

    Clarke CCRT266 Speed controller repair

    Hi, Can anyone help me to find the 8PIN chip for the Clarke CCRT266 Speed controller please? Markings: SY (In a circle) 069B 201628C Shown here: Camerart
  9. camerart

    Programming PIC to sontrol 6x SERVOs

    Hi, I'm programming PICs for a transmitter/receiver project. The program for the receiver needs to output 6x SERVO controls (standard RC SERVOs) I kind of understand the theory, of the 20ms PERIOD and within that time the SERVO bursts are outputted, but I would like a clearer explanation of...
  10. camerart

    The shape of schematic components

    Hi, I'm making a schematic, with a 44PIN PIC and I want to place 4x 11strip connectors so that I can connect to each pin on the PIC, on a test PCB. For me to connect PIN1 to PIN1 on connector 1, then PIN2 to PIN2 on connector 1 and so on, it will be a tangle of wires. Why aren't the schematic...
  11. camerart

    Converting decimal LAT/LON to NMEA format

    Hi, I need a program in preferably 'Oshonsoft PIC basic' or 'Excel' or another basic program, that will convert a decimal LAT/LON from 'say' Google maps to the NMEA format. E,g, ?????.????? ?????.????? $GPGGA,123456,?????.?????,N,?????.?????,W,1,04,1.80,100.0,M,47.7,M,,*7F? I'm...
  12. camerart

    Impedance matching?

    Hi, I have a Sansa clip MP3 player and a PURE move portable radio. I am trying to get the player to work with the aux in of the radio. The radio doesn't have a volume for aux, but if I turn the player up so I can hear it, the radio cuts out for a second. I assume this is impedance matching...
  13. camerart

    RC Transmitter problem

    Hi, I am trying to connect a radio transmitter to a TX module to get it to work as it should. There is something wrong with either the transmitter signal, or some other thing. I put the output of the transmitter into an oscilloscope and here is what I see:- This shows the channels...
  14. camerart

    Linear Generator

    I am experimenting with a Linear Generator. I have made a generator based on the shake Torch. This is a tube with a coil round it, and a magnet going backwards and forwards inside the coil. It works ok, but I think there must be a better way to do it. Is there anyone who knows the best...
  15. camerart

    Amp, 0.1v to 10v AC Input to 5v DC output

    Hi, I am trying to convert varying 0.1 to 10V Approx AC input from a Coil to give a 0 to 5v output that I can input an A/D converter on a PIC chip. There are 2X inputs that I compare. I have tried Op amp circuits, but after many attempts, I can't seem to get consistency. Is it...
  16. camerart

    Coil amplifier

    I made a coil amplifier a year or so ago, for locating a signal wire position. It gives 2X outputs, and connects to a PIC A/D inputs for the calculation. See attachment: It has caused problems from the start. It wasn't strong enough, so 2X transistors were added 'TR1 TR2' a second Diode...
  17. camerart

    Camera leveller

    Hi, I am trying to make a Camera leveller, using dismantled Radio control Servos for the action and Opto couplers with Pendulums for the sensing. The Servo Potentiometers are out of the case, and I need to know how to connect the Opto couplers to the Servos to give feedback. The Opto...
  18. camerart

    Camera Power

    Hi, I am trying to make a power supply for my Canon A460 Camera, running from a 12V Battery. Output 3.2V- 2A Has anyone got a circuit please?
  19. camerart

    Starting Crystals

    Hi all, This is my first time on the site. I sometimes get trouble with Crystals not starting up. I am making a new circuit, modifying a circuit where the Crystals always start up, but on the new circuit it doesn't. The Crystal (Watch type 32766 Hz) is connected to the input of a 4060...
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