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Recent Forum Posts

Re: Calculating base resistor on mosfet AO3400A

You can drive the MosFet directly from PIC as your frequency of activations is really slow.

Gate driver is needed if your frequency is high. Also resistors or ferrite beads are also neededin...
Ioannis Today, 10:57

Re: Calculating base resistor on mosfet AO3400A

Richard brings up an important point about the PIC's drive current capacity. I'll use 10mA in my calculations.

R = V / I
= 5 / 0.010
= 500

P = V * I
= 5 * 0.010
= 0.050 W (just...
Demon Yesterday, 19:58

Re: New project - MSFS C++ USB interface

That's a cool service. 😎

Gonna save that one.
Demon - 24th July 2025, 19:25

Re: New project - MSFS C++ USB interface

Sometimes it is cheaper in small quantities to have someone make your parts vs building your machines to do the job. Plasma cutters do not make clean enough cuts as needed for control panels. Anyway...
mark_s - 24th July 2025, 16:40

Re: Calculating base resistor on mosfet AO3400A

no gate driver needed for occasional intermittent switch... the rise and fall times are where there is power dissipated in the mosfet...... do a calculation of the power dissipated in that 30 micro...
amgen - 24th July 2025, 15:09

Re: Calculating base resistor on mosfet AO3400A

1 columb = 1 amp for 1 second

To apply 6nC of charge in 5.5 nanoseconds takes
6e-9/5.5e-9 = 1.09 amps

It needs a gate driver to get that speed, a pic with 20mA of drive can provide a 6nC...
richard - 24th July 2025, 14:33

Re: Calculating base resistor on mosfet AO3400A

.
usually, all the gate drive circuits mostly have to do with the frequency the mosfet is engineered to operate. That is where high frequencies matter and the rise and fall times of the mosfet...
amgen - 24th July 2025, 13:16

Re: New project - MSFS C++ USB interface

One of the challenges I had given myself was to simulate an electric breaker in MSFS, just like the ones in a Cessna 152.

9983

So far, the least expensive and "good enough" technique was...
Demon - 24th July 2025, 02:45

Re: MOSFET selection

Excellent!

Yeah, that's why I considered the opto-couplers at first; to isolate the solenoid from the 5V circuit, but I'll be using separate sources:

- 5V from TPS56637 (for PICs, LEDs, and all...
Demon - 23rd July 2025, 23:55

Calculating base resistor on mosfet AO3400A

Using datasheet:
https://www.aosmd.com/res/datasheets/AO3400A.pdf

My work so far:

I added tD(ON) and tr to get total t

Google AI says:
Ig = Qg / t
Demon - 23rd July 2025, 23:42

lester

GPS Shield

The Amicus GPS shield contains a multi channel GPS receiver, as well as a 16k byte (128 kbit) serial (I2C) eeprom, and a 3 Volt, 12mm battery socket in order to maintain the receiver's built-in RTC (Real Time Clock).

Available in our on-line store

...

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Comprehensive documentation

Published on - 30th August 2011 04:03

Comprehensive documentation and a helpful and friendly support environment, make using Amicus18 an easy and enjoyable ...

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Companion Sheild

The entry level shield is labelled The Companion Shield. This is a PCB laid out in the pattern of a solderless breadboard. The holes are single sided, which means that components can easily be removed using solder mop braid, or a solder vacuum tool, if a mistake is made, or components need to be re-used.

The (PBP3) Companion Shield Manual iCan be downloaded from here

See the Companion Shield in our on-line shop
...

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What is Amicus18?

Amicus is a multifunction development system inspired by the popular Arduino board, however, the Amicus board uses a Microchip PIC^® microcontroller instead of an Atmel AVR^tm type.

Comprehensive documentation and a helpful and friendly support environment, make using Amicus18 an easy and enjoyable experience for beginners and seasoned programmers.

Forum Moderator Mackrakit (Dave) very kindly ported the Proton BASIC Compiler code over to PBP3 and modified the original AMicus18 docuemts for PBP3 users.

...

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The Amicus18 Board

Amicus18 is an embedded system platform based on a simple open hardware design for a single-board microcontroller, with embedded I/O support and a standard programming language. A great Partner for PBP3 and Perfect for the PBP3 Experimenter.

AMICUS18 in our on-line shop

...

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Product Activation

When installed PBP3 will operate in trial mode for 15 days, we recommend that you TRY PBP3 BEFORE you buy PBP3. Be sure that you are happy with the product and the facilities it offers

After purchasing your PBP3 license, the product may be activated by entering the activation key as prompted by the application, this process should be carried out whilst your host machine has access to the internet. Activation requires that the machine can contact the melabs activation service.
...

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Supported Devices

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3 x 7 segments LED display

...

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Dice Project

PICBASIC PRO Electronic Dice project for the PIC10F202 or PIC10F206. Written by Melanie Newman

...

Read More
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lester