Post Created date
ATtiny202 - Oregon Scientific temperature sensor replacement
Tracks are too thin, too long and bad placement. The dc/dc converter switches at high frequency and needs proper attention paid to layout - refer to the datasheet. It gives you...
Thursday, 8 April 2021 - 04:54
ATtiny202 - Oregon Scientific temperature sensor replacement
The layout needs to be improved -especially around U1 otherwise it will make a better transmitter than the actual tx module!
Thursday, 8 April 2021 - 00:19
Reading The pwm signal using ads1115 module
Aye, Groundskeeper Andy!
Saturday, 3 April 2021 - 12:49
Reading The pwm signal using ads1115 module
As per your other post, you need to convert the pwm to an analog signal.
Saturday, 3 April 2021 - 12:42
Precise variation of 0-50 mv generation using pwm in atmega328
How are you filtering the pwm output to derive a variable voltage? Once you start moving into the realm of microamps, things like input bias current can upset your day. The LM358...
Saturday, 3 April 2021 - 12:41
ADC to use between computer and a hydrophone?
My first thought was a soundcard. Along with that you get a number of tools to capture and process the signal. I’d be asking Neptune what their other customers use. As for cheap...
Wednesday, 31 March 2021 - 03:23
Capacitor Flexibility with Voltage
Not could, will. Tants are not very tolerant.
Tuesday, 30 March 2021 - 11:10
Output defined count of clock cycles without cpu?
Using less than 12 bits for brightness will usually be as effective.
Monday, 29 March 2021 - 12:22
Return from an ISR to a function different from where it is called. Possible ?
Well, the requirement of ‘simple’ can be interpreted many ways! I had a similar real time requirement many years ago - the isr had to do a bit of work, then there was some...
Saturday, 27 March 2021 - 07:51
groundloop and field EMIs
The transzorbs go between the 0V and the RS485 bus. The wire is where the energy is. A lightning strike couples by two means - electromagnetic and electrostatic. For a nearby...
Saturday, 27 March 2021 - 07:39
groundloop and field EMIs
Ron, what ends up happening is that any conductor ends up being a secondary winding in a transformer with a air core. The lightning strike is the primary. Due to the poor coupling...
Saturday, 27 March 2021 - 00:36
Brushless DC motor suddenly reversed, MOS tube is broken
Would you? could you? On a plane? On a train?   got to love the expression 'mos tube' - somehow the meaning gets muddled when translating from Chinese. Then there's pcb...
Friday, 26 March 2021 - 10:50