Geeetech

knut_ny wrote:A new one received today (apr.17) THX!
Text on top of chis is fully readable! (Far from chip shown above)
I'll test it as soon as I've finishes my project sending data via ordinary 'walkie-talkies' (using DTFM-chip 8880)

TESTED! Chip works great. Thanks again!

A new one received today (apr.17) THX!
Text on top of chis is fully readable! (Far from chip shown above)
I'll test it as soon as I've finishes my project sending data via ordinary 'walkie-talkies' (using DTFM-chip 8880)

I guess thats easy. The LM35 has three lines: Ucc, gnd and analog out. Hold the TO92 facing you - pins down: Ucc-> 5V (left pin) gnd-> GND (right pin) Uout ->analog X (middle pin) (X=0..5) The voltage you get is 10mV / deg C (cannot measuser below freezing with this method) int val= analogRead(X); /...

MY TTL<->USB card had a jumper, which I had to remove to get it working.
(based om PL2303-chip)

Knut

Photo of chip added.
Has the chip been overheated?

Build a BMI measuring scale using these parts: A (defective) electronic bathroom scale for loadcells , microcontroller (Arduino?), Ultrasonic sensor (e.g. SR04), LCD-display (e.g.1602), dual Rail-to-Rail OpAmp (e.g. one TS912) , Resistors and connecting wire. The scale has a loadcell in each corner....

..Forget to remove the pull-ups. 5k +- is OK (internal ones do NOT do the job) You are not the ony one with a problem. Here is the short version of my story: I have bought 2 pcs HMC5883L magnetometers. One works fine, the other is DOA. I have done all I possibly can do (exept altering the board) to ...

I have bought 2 pcs HMC5883L magnetometers. One works fine, the other is DOA. I have done all I possibly can do (exept altering the board) to deterime that I have a defective board. Visual (under microscope) inspection. Verified all connection lines point to point. It looks OK. I do not have the equ...